Update: influenza activity--United States and worldwide, May-October 2004.  [electronic resource] 

 -  MMWR. Morbidity and mortality weekly report  Oct 2004 
 - 993-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1545-861X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Global Health<br/>Humans<br/>Influenza A virus--isolation & purification<br/>Influenza B virus--isolation & purification<br/>Influenza, Human--epidemiology<br/>United States--epidemiology